How to connect cables when they bend in a cable tray

To connect a cable tray at a bend, use pre-manufactured bends or custom-bent sections joined with splice plates or bolted connections to ensure safety and stability.Using Pre-Manufactured or Custom Bends

Cable trays often come with pre-manufactured 90° or angled bends, which simplify installation and maintain proper cable support and minimum bend radius for cables . If a pre-made bend is not available, you can create a custom bend using a cable tray bender or, for wire mesh trays, a metal bar or bolt cutter to shape the tray on-site . Ensure the bend is smooth to avoid damaging cables and maintain structural integrity .

Connecting the Bent Sections

Once the bend is prepared, the sections are joined using one of the following methods:

• Splice Plates with Bolts: Flat metal plates with pre-drilled holes are aligned over the ends of the tray sections and secured with bolts. This method provides a strong, flexible, and code-compliant connection suitable for most installations .
• Quick Connect Systems: These allow faster assembly when installation time is critical, often used in commercial or light industrial settings .
• Welding: Reserved for heavy-duty or permanent installations, welding creates a strong bond but requires skilled labor and may damage protective coatings .

Installation Tips

• Support the Tray Properly: Ensure the bent section is supported by hangers or brackets to prevent sagging and maintain load stability .
• Maintain Minimum Bend Radius: Avoid sharp bends that could stress cables; follow manufacturer guidelines for minimum bend radius .
• Check Alignment: Measure and mark the exact location for the bend to ensure the tray aligns with the rest of the system .
• Protect Cut Ends: For wire mesh trays, use rubber caps or zinc-coated edges to prevent injury and corrosion . By following these steps, you can safely and effectively connect cable trays at bends while maintaining system stability, cable protection, and compliance with electrical codes.